Today's Problem

There is a acute angled triangle ABC and a point D inside, such that the sum, DA + DB + DC is minimum. Let x be angle ADB, y be angle ADC, and z be angle CDB. Find, xy + yz + zx in degrees.

Correct Answer: 250 points

Incorrect Answer: 0 points

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2.50

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ARVIND KUMAR RAI, BENGAL COLLEGE OF ENGINEERING AND TECHNOLOGY DURGAPUR

tanmay kamble, iit goa

Amit Sharma, Iit goa

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